British Built Isettas have different wiring looms because all the electrics are Lucas (instead of Bosch) and Hydraulics/Brakes are Girling rather than ATE as on the German-built BMW Isettas.They are not interchangeable.You will not find these in the USA. Have you tried Bromley Bubble in the UK?http://www.bromleybubble.com

Canadian Export Isettas are British Built, but owners of those still have to source parts from the UK.